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138828-1 — RAIL ASSEMBLY,SPECI

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

138828-1: RAIL ASSEMBLY,SPECI.

The RAIL ASSEMBLY,SPECI is a the manufacturer industrial component. Key specifications include end_item_identification: MODEL 420D BACKHOE LOADER BLN, part_name_assigned_by_controlling_agency: RAIL ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-388-3722, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
138828-1
NSN: 3120-01-388-3722
NIINs: 013883722, 015144624
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 38200 — DRS TECHNOLOGIES CANADA LTD (CAN)
SPECIFICATIONS
end_item_identificationMODEL 420D BACKHOE LOADER BLN
part_name_assigned_by_controlling_agencyRAIL ASSEMBLY
NSN3120-01-388-3722
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 138828-1 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BODY INSIDE DIAMETER: 0.2500 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 303 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL LENGTH0.7000 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.2500 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 303 OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
10110385Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 138828-1?
138828-1 is a RAIL ASSEMBLY,SPECI.
What parts can replace 138828-1?
There is 1 known substitute for 138828-1: 10110385. Substitute compatibility should be verified for your specific system.
What is the NSN for 138828-1?
138828-1 is cataloged in the U.S. Government catalog under NSN 3120-01-388-3722. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.